block

问题 Want to query a photo in the Coredata database this is my code this is the NSObjectSubclass category //Photo+creak.h #import "Photo+creat.h" @implementation Photo (creat) +(Photo *)creatPhotoByString:(NSString *)photoName inManagedObjectContext:(NSManagedObjectContext *)context{ Photo *picture = nil; NSFetchRequest *request = [NSFetchRequest fetchRequestWithEntityName:@"Photo"]; request.predicate = [NSPredicate predicateWithFormat:@"name = %@", photoName]; NSArray *matches = [context

问题 I have a main div as a container with a width of 90%. Inside at the top, I have a title (image) with height: 5em , display: block , and margin: auto . My HTML code is set up like so: <a href=""><img scr=""></a> . When I click way to the left of the picture, I am still able to click on the link. I am using Chrome for this . I tested this in Safari and Firefox ; same result. IE and Opera only registered the link when my mouse was directly over the picture (which is what I want). I'm hoping I

问题 In this (rather old) article, the author states: "Port Blocking Port blocking allows an application to prevent other applications from performing specific binds to the ports within a specified range. When blocking a port range, the application must choose a contiguous range of port numbers that are between the value of the MaxUserPort setting (5000 by default) + 1 and either 49151 (for Windows XP and Windows Server 2003 with no service packs installed) or 65535 (for Windows Server 2003

问题 I have simple WinRT application, that will be communicating with remote server via TCP. In order to do that I'm creating new StreamSocket object, and connecting to remote server after clicking a proper button, like this: private async void ConnectButtonClick(object sender, RoutedEventArgs e) { StreamSocket socket = new StreamSocket(); HostName host = new HostName("192.168.1.15"); await socket.ConnectAsync(host, "12121"); } The problem is that this code is blocking the UI thread. I've created

问题 I have a singleton class with a method that takes a success and failure block as parameters, it calls another method which executes asynchronously and also uses success and failure blocks. The success block for my method is called by the success block of the asynchronous method. Everything works great unless my view controller gets deallocated before the success block returns in which case the app crashes. This situation seems analogous to setting a delegate to nil in the dealloc method. How

问题 I have a thread: void threadCode(object o) { doStuffHere(o); // Blocking call. Sometimes hangs. } and I'm calling it like this: Thread t = new Thread(new ThreadStart(delegate() { threadCode(o); })); t.Start(); StopWatch sw = new StopWatch(); sw.Start(); while (t.IsAlive) { Application.DoEvents(); if (sw.EllapsedMilliseconds > myTimeout) // Somehow kill t even though doStuffHere(o) is blocked (but hung) } I'm using the .NET Zip Library and calling ZipFile.CommitUpdate() which works most of the

问题 So say I have a Question model and an Answer model and Question has_many Answers (it's a multiple choice question). Suppose that questions is a collection of Question objects. In order to collect all the answers I can do this: questions.collect(&:answers) Two questions: What precisely does this syntax mean? Does it expand to questions.collect { |q| q.answers } or is there something else going on here? Is there a way to do questions.collect { |q| q.answers.shuffle } using the same syntax?

问题 I'm using AFNetworking to perform URL request and defining success/error blocks within NSOperation - so that's basically running asynchronous process within NSOperation. I understand the caveat behind this approach, being NSOperation would terminate prematurely before delegate methods are called and therefore have implemented one of the suggested solutions by running start() on the main thread (relevant post Asynchronous methods in NSOperation). So far that's all good, I can see that the

问题 I am working with C# winforms Application i am dll in my project when call that function from that dll i get unwanted MessageBox from that .Is it possible to block that MessageBox? 回答1: If push comes to shove, you can fire up a thread that kills off any open windows by title using WinAPI or libraries. I'd resort to less harsh mechanisms like changing the dll first or putting a change req to the right people. 回答2: There is no nice option to get rid of the message box if this is a third-party

问题 I have a template that includes another template. This included template has block tags in it. Example: base.html BASE {% block title %}Base Title{% endblock %} {% block content %}{% endblock %} template1.html {% extends 'base.html' %} {% block title %}Extended Title{% endblock %} {% block content %} Extended content {% include 'include.html' %} {% endblock %} include.html {% block title %}Include Title{% endblock %} {% block another_content %}Include Content{% endblock %} What I'm expecting